Java SHA1 sha1(String str)

Description

sha

License

Apache License

Declaration

public static String sha1(String str) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.security.MessageDigest;

public class Main {
    public static String sha1(String str) {
        if (str == null || str.length() == 0) {
            return null;
        }//ww  w  .ja va2 s  . c om

        char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };

        try {
            MessageDigest mdTemp = MessageDigest.getInstance("SHA1");
            mdTemp.update(str.getBytes());

            byte[] md = mdTemp.digest();
            int j = md.length;
            char buf[] = new char[j * 2];
            int k = 0;
            for (int i = 0; i < j; i++) {
                byte byte0 = md[i];
                buf[k++] = hexDigits[byte0 >>> 4 & 0xf];
                buf[k++] = hexDigits[byte0 & 0xf];
            }
            return new String(buf);
        } catch (Exception e) {
            return null;
        }
    }
}

Related

1. sha1(String src)
2. sha1(String src)
3. sha1(String srcStr)
4. SHA1(String str)
5. SHA1(String str)
6. sha1(String str)
7. sha1(String str)
8. sha1(String str)
9. sha1(String str)